package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDate;
import java.time.LocalDateTime;

/**
 * @Auther: Sun
 * @Date: 2025/11/5 - 11 - 05 - 19:25
 * @Description: com.sky.aspect
 */
@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..))&& @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){
    }
    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint)  {
        log.info("开始进行数据填充");
        //获取当前被拦截的方法上的数据库操作类型
        MethodSignature signature =(MethodSignature)joinPoint.getSignature();
        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType value = autoFill.value();

        //获取当前被拦截的方法参数--实体对象
        Object[] args = joinPoint.getArgs();

        if (args.length == 0){
            return;
        }
        Object entity = args[0];
        //准备赋值的数据
        LocalDateTime localDate = LocalDateTime.now();
        Long currrentId = BaseContext.getCurrentId();

        //根据当前不同的操作类型，为对应的属性通过反射赋值赋值
        if (value == OperationType.INSERT){
            try {
                Method setCreateTime = entity.getClass().getMethod(AutoFillConstant.SET_CREATE_TIME,LocalDateTime.class);
                Method setUpdateTime = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
                Method setCreateUser = entity.getClass().getMethod(AutoFillConstant.SET_CREATE_USER,Long.class);
                Method setUpdateUser = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);

                setCreateTime.invoke(entity,localDate);
                setUpdateTime.invoke(entity,localDate);
                setCreateUser.invoke(entity,currrentId);
                setUpdateUser.invoke(entity,currrentId);
            } catch (Exception e) {
                throw new RuntimeException(e);

            }
        }else if (value == OperationType.UPDATE){
            try {
                Method setUpdateTime = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);

                setUpdateTime.invoke(entity,localDate);
                setUpdateUser.invoke(entity,currrentId);
            } catch (Exception e) {
                throw new RuntimeException(e);

            }
        }

    }
}
